International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Еlectronics is the most progressive branch of mechanical engineering since the 1960s. Specific for the development of this industry in our country is that each technological development or the creation of material conditions for its implementation in the period from 1960 by the end of the socialist period, it had received support at the highest state level, in the form of continuous promotion, smooth financing, the provision of embargoed high-deficit technologies by special services and the wide opening of the economy to integration into production. Significant for the development of the industry in our country is the specialization in the production of electronic computers, which was won in a competitive competition between all member countries of the COMECON on the basis of previously achieved in Bulgaria high scientific results in the field.

The sol-gel process is a well-known and reliable process for obtaining materials and coatings of different structure and properties. An important feature of this method is the choice of starting precursors to obtain the desired compositions. The complexity of the technology is due to the difficult process control. For this purpose it is necessary to accurately calculate the stoichiometry to obtain the final phase. Thus, the sol-gel technology is widely used as in the production of coatings by immersion and spraying, aerogels and others. However, there are many other applications such as electronic materials that have not yet been well studied. In this study, after a brief explanation of the process, some of the most important applications are considered.